Door securing device



Feb. 13, 1945. A. CHAMBERS ETAL 2,369,136

DOOR SECURING DEVICE Filed Nov. 21, 1941 2 Sheets-Sheet 1 INVENTORS, We flay/Jazzy, Pay Z6R5'r/7a/VF BY /M ATTORNEY.

Patented Feb. 13, 1945 NEITEE D "0F-F'I1C.E

flasearse DOOESECURINGDEVICE Allen Chambers,iilnflependenc mn'dfioy'l. :Gearchart, :Kansas-..(iity, Mo.,sassi nors of Dllflwthilid -to ;-W..E. Ludwig-Kansas .City, Mo. *ApplicationNoveniber 21, 1941,Sefial 1805419356 :2 Claims. .(.Ol..'29226 8) This'inverition relates to improvements in a door "securing dev'ice andhas, particular reference to a .door securing device wherein the 'd'oor'is.'seowed to the door jjamb "for a'limited 'openposition. 1

Door securing devicesfor securing'the door in .a limited open position, which are now'in :gen- *eral use, consist of chains or hinged members "which "are securedto'the door casing and door in *such 'a'manner that they are exposed within the .room at .all times and not .only detract fromithe appearance of the'structure, but also project'from the structure Lto .an objectionable degree; -ifurthermore, the door. securing device, *is operable only irom'inside the;room.

L'Ihis inven'tion"is "an improvement over our pending application, 'Seri'alf'No. $409,230, jfile'd' September 2, 1941, :and has "for its "principal object ;the"provision of, a door securing device wherein theprincipalparts'ofthe device are disposed betweenthe door and -the doorjambwhen the door "is closed and wherein the door securing devicej is operable from either'inside or outside the .room.

Afurther object of the pres'entjinventionis the 4 provision of a door securing devic ihaving means whereby thetenant 'cann'otleave'the door ofihis .room'closed when leaving .the room without operrating "a 'key'from outsidethe room to operate the :securing device.

Another. object .is' theprovision of. door securing means wherebythe .doorlslsecuredragainst open- 'ing 'from ,a predetermined partially ,open position .and is also-secured against accidental closing jromsaidpartially.opemposition.

A further object of the present invention .is .the provision -of .a door securing device wherein .an extension bar is .mounted .insa housing 251% cured to the face .of the door .jamb, and adjustable means carri'ed by .the doorto operablyen .i flge said extension .bar :and move it to the nexmended' position 23S the FdQOl ;is moved from athe iclosed to the partiallycopen position.

Other objects are simplicity andeconomy :of construction, ease and efii'ciencytfof operatiomand adaptability for use With'the various types of doors and rto FefiBCt :difierent degrees of opening.

With these objects as -Well as other objects vwhich will appear during'the course of thespeci- 'fication, in view, reference will now behad t'o the drawings wherein:

' Figure 1 is aninsideelevation'ofapportion of ea;- "door and its mounting "frame having a 'door "securing device emb'odying thisinvention.

Figfz-is a cross sectional "view, taken "on'line 55 'IIII of Fig. 1, with the door showngin the partially open position injdotted lines.

Fig. 3vis "an ,ioutsidelelevation .of a portion of the door and its mounting "frame showing 'cer- 'tain portions o'f theIdoor. securing device.

Fig. '4 is an enlarged vieWof the face of the .door jamb with the extension bar and .housing shown in position thereon and; with partsfbro'ken' away and with the extensionbarin'the closed position and'extended'in dotted lines.

Fig.5 is an enlarged .sectional :view, taken on line V-"Vof Fig. Twithithe .bar extended.

Fig. 6is an enlarged "sectional view taken'on line VI.VI ofFighl, with certain partsyin geleivation." I

Fig. 7 is a horizontal sectional view; taken ;on

line VII-VII of'Fig.16.

Fig. 8 is an elevational view of'the bar hous- Fig." 9"is an .enlargedview of theoperatingflock and its 'connectionwithithe operating gear partly in section. Fig. 10 Ban inside end elevation ofitheilock.

Fig. .111 "is an end elevation of 'jthe operating .Fig. .1218 an :elevational 'ViBW partly broken away of a .modified form of the devicewith .the extensionbar showninithe'normal position;

Fig. 13 is a horizontal sectional viewgtakengon line XIII-I-XIII ofFig. 12 .withjthe bolt shown in the intermediate-position to enga etheidoor limiting bar. v I x V Fig. v14; is 'an enlarged sectional view .of a,portion of thelock'an'd operatinge gear.

Fig. 15 is a reducedgsectional View ,takenmi servesas-an abutmentjor the doorwhere bygitis maintained in substantially flush relation with the inner edge .of .iamb 28 when the door closed. The usual door casings-:34.partiallyoverilap the edge-of jam 2-8 and .extend outwardly therefrom.

.For.securelyholding.the door in the' partially open position. for ventilation :and foryprotection from intrusion when answering the.door,-:the 01- lowing door securing device is provided: The preferred form of this device is shown in Figs. 1-11,,

inclusive and includes a housing 36, having side walls 38 and 40, spaced apart with the inside wall offset and Welded at certain points to the planar outside wall 40. The housing is open at its front edge 46. Side wall 40 which is normally adjacent the edge of door 22 is provided adjacent its upper end with a, bight 42.

It Will be noted that the Width of housing 36 is substantially the thickness of the door 22 and it is morticed into jamb 28 so that the outer surface of Wall 40 is in planar relation with the face 30 of the door jamb. The housing 36 is held in position by means of a counter-sunk screw 44 which is disposed flush with the outer surface of wall 38 and in alignment with opening 36 formed through wall 40 as clearly shown in Fig; 8. An

offset portion 41 formed inwardly in wall 40, is directly opposite bight 42 formed in the outer housing wall 40 and extends transversely acrossthe Wall 38 to the front edge of the housing and may be slightly beveled or offset at 48,

The screw 44 is so positioned, relative to the hole 46 formed in the side wall 40, that it is not accessible therethrough when the extension bar 50, pivoted at 66 within said housing, is in the normal positions as shown in Fig. 4; however, when the extension bar is moved to the extended and completely raised position with the door wide open, the bar is moved from between hole 46 and the head of the screw so that the screw can be removed or set. A suitable screw 52 may be provided for securing the lower end portion of the housingagainst displacement. r

It will be noted that the door jamb is recessed at 54 to receive the collar 56 formed in the wall 38 in horizontal alignment with the bight 42 formed in wall 40. This collar or flange 56 is vertical oblong, to compensate for sagging of the door and is snuggly fitted into recess 54 to hold the housing 36 in position and against transverse movement when the limiting bar is in use.

Extension bar 50 is provided with a longitudinal slot 58 having an enlarged portion 60 at its upper end and outwardly disposed offset 62 at its lower end. The bar is downwardly tapered and rests against offset 64 of wall 38 when its outer edge. is flush with the outer face of housing 36. The pivotal pin 66 of the extension bar 50 is slightly above bight 42 so that the pin 66 is definitely secured in both of the walls 38 and as clearly shown in Fig. 5. I I Y A tension spring 68 rigidly secured to wall 38 at extends upwardly to engage extension bar 50 above pivot 66 thereby tendin to urge the bar against offset 64 when the bar is in the normal position and also serves to urge the outer extremity of the bar 50 downwardly when the bar is in the extended position shown in dotted lines in Fig. 4. Other types of spring tension might be utilized for this same purpose without anymaterial change in the general structure of the de- One form of suitable adjustable means carried by the door for operatively engaging the extensionbar 50 is shown in the form of a bolt I2 slidably mounted in 'a housing I4 which is inserted in a cylindrical recess I6 formed inwardly from the edge surface of the door. This housing i securely anchored by means of screws I8 which pass through housing plate 80. Bolt I2 is notched at 82 to provide a flattened surface 84 into which is end portion of bolt 12 is annularly grooved at 90 to form a bolt head 92.

Referring to Figure 6 and '7 reference is had to the specific means shown whereby the bolt I2 is operated from the inside of the room by means of a hand knob 94 and from the outside by means of a key 96. Axially secured by set screws 98 to knob 94 is a pinion or gear I00, which extends through a collar I02, hole I04 formed through door 22 and then through hole I06 formed through housing tube 14. The pinion when so positioned through housing I4 is in mesh with I teeth 86, so that as it is rotated it will move the bolt; I2 longitudinally to any'of the desired po sitions.

The outside of door 22 is provided with a cylinder lock at I08 having a barrel I I0 and a plug H2 into which is adapted to b inserted the key 96. This lock is of the well known standard type, such as the Yale or Corbin, and is best shown in Figures 7, 9, l0, and 11. This lock is positioned in a recess I I6 formed in the door in axial alignment with the pinion I00. 7

The barrel IIO extends through an opening in plate H8 and is secured in the proper position relative thereto by a nut I20 which cooperates with thread I2I formed on barrel IIO.

Placed between the head I22 and plate H8 is a spacing washer I24 of any suitable thickness to properly position the lock barrel relative to the housing I4. This lock is of a common type wherein the key can be removed from the lock at either end of its stroke thereby making it possible held under compression by means of washer I42 which is tightly riveted to the end of the pinion.

Rigidly mounted on pinion I00 is a disc I44 which contacts the outer face of frictionpla'te I34. This friction means is sufiicient to make it possible to drive the bolt by, means of key 96 and also topermit a slippage of the friction parts when the boltis operated by means of the hand knob 94. The amount of friction between friction,

plate I34 and disc I44 may be easily varied by either changing the size or compression of the springI40.-

To conserve space, it will be noted that the disc I 44 rests against the housing '74 and serves to maintain the pinion against longitudinal movement.

screws I46 which extend through collar I02 and are threadedinto boss I48 formed on the inside of plate I I8.

The usual operation of the device is as follows: When the tenant is inside the room. and desires to operate the door securing device he sim-, ply turns the kno-b94 to or from the lock position until the bar dropsft'othe position shown in The lock I08 is secured against removal from the outside of the door by means of machine from and regardless of the number of times that the knob 94 is turned it will not affect the position of the plug in the barrel.

When the tenant leaves the room and desires to lock the door he inserts the key 96 in the lock and turns it to force the bolt 12 to the position shown in dotted lines in Figure 6. He removes the key and on returning to the room can unlock the door by reversing the movement of the bolt 12.

It will be noted that the spring tension'of I40 is sufiicient to set up sufficient friction between discs I34 and I44 whereby when the lock is manually operated the pinion I will be rotated to move the bolt. Should the tenant desire in leaving the room to secure the door in the partially open position, then he simply moves the lock to the intermediate position so that bolt groove 90 will register with bar 50, then the door is moved to the partially open position and. the key is turned to either one of its limits and .then removed from the lock.

On returning to open the door the door is first closed then the key is turned to operate the plug so that the plug is rotated to move the bolt to the unlocked position.

The modified form shown in Figures 12, 13, 14, and 15 contemplates the provision of a door securing. device wherein the bolt I50 is always urged to the locking position by a spring I 52 and it is the principal object of this form to provide means whereby the door can not be completely closed from the outside without first inserting the key into the lock to move the bolt to the unlocked position.

The bolt I50 is mounted in the tubular housing I54 and is provided with rack teeth I56 and an annular groove 90 and head 92. 'The spring I52 is positioned between the inner end of bolt I50 and the inwardly flanged end I58 of housing I54.

The principal difference between lock I60 and the lock shown anddescribed in the preferred form is that the key is removable from the look only when the plug I62 is in one certain position.

Referring to Figures 14 and 15, it will be noted that the end of pinion I00 is reduced at I64 to receive the collar I66 which is secured thereto by pin I68. This collar has an annular boss I which is rotatably mounted in the ring I12 secured to the plug I 62 by means of screws I14. Collar I66 is provided with a transversely disposedlug I16 which is adapted to be engaged by the longitudinally disposed tooth I11 integral with a ring I12.

The inner plate -38 of the door jamb housing may be provided with an extension I18 which serves to protect the wood work of the door casing against mutilation by the extended door bolt I50. I

The operation of this modified form of securing device is as follows:

As previously stated, the door bolt I50 is normally in the extended or looking position due to, the action of compression spring I52. When on the inside of the room the operator may move the bolt to any desired position by means of the knob 94. Since the bolt I50 is normally in the extended position and the tooth I11 of the lock member is in a fixed position when the key is removed from the lock, it is apparent that lug I16 will move away from tooth I11 whenever the bolt is moved inwardly against the action of spring I52 by knob 94.

When the operator is on the outside of the room and the door is locked, he simply inserts the key I into the lock and rotates it so as to force tooth I11 against lug I16 to rotate the pinion I00 and move the bolt to the unlocking position. The action of spring I52 will now force the lock plug I 62 back to its normal position so that the key can be removed after the door has been opened.

When the tenant leaves the room and desires to maintain the door in the partially open position he moves the bolt so that it will properly register with bar 50, opens the door-to the limit of bar 50, turns the key back to normal locking position and removes it from the lock. On returning to open the door, he first closes the door. I

inserts the key, and operates the bolt I50 to the unlocking position.

It is quite apparent that many modifications '.may be made without departing from the spirit limited 1. In a door securing device an open-edge housing having an inner side wall and an outer side wall and having a bight formed in its outer side wall and being secured to the inside face of the door J'amb, a longitudinally slotted extension bar pivotally mounted within said housing by means of a pin engaging the two side walls of said housing above said bight with one end of said bar slot positioned in alignment with said bight, an annularly grooved sliding bolt carried by. the door operable by means from either side of the door to cause it to enter said bight and engage in the slot of said extension bar and move said extension bar to the extended position as said door is moved toward the open position, and a spring positioned to urge said bar into said housing and to urge it against said bolt when the bar is extended.

2. In a door securing device a housing secured to the face of the door jamb, an extension bar pivotally mounted at its one end within the two side walls of said housing and having a longitudinal slot formed therethrough, the end portion oi said slot adjacent the pivotal point being enlarged and.the end of slot at the free end of the bar being ofiset transversely of the bar, a recess formed in the inner wall of said housing in alignment with the enlarged end of said slot, an annularly grooved bolt slidably mounted in the door and normally urged to the extended position by resilient means whereby the bolt is normally moved into said'recess in said inner wall to secure the door in the closed position, a rack formed in the body of said bolt,a pinion in operative relation with said rack and manually operable from both sides of said door whereby said bolt is movable to the various operable positions against the urge of said spring to permit its easy engagement with said extension bar to limit the 

